Thermodynamic extinguishing device for lamps



M. H. BAKER, DEC'D.

M. H. BAKER. ADMINISTRATRIX.

THERMODYNAMIC EXTINGUISHING DEVICE FOR LAMPS.

APPLICATION FILED APR-26,1915. RENEWED NOV. 17.1919.

1 350, 588. Patented Aug. 24, 1920.

3 SHEETS-SHEET 1.

WITNESSES: lNl ENTOR.

M. H. BAKER, DECD.

M. H. BAKER. ADMINISTRATRIX.

THERMODYNAMIC EXTINGUISHING DEVICE FOR LAMPS.

APPLICATION FILED APR-26,1915. RENEWED NOV. 17.1919- 1,350,588, Patented Aug. 24,1920.

3 SHEETSSHEET 2.

INI EN TOR.

M. H. BAKER, DECD.

M. H. BAKER, ADMINISTRATRIX.

THERMODYNAMIC EXTINGUISHING D EV|CE 'FOR LAMPS. 1 APPLICATION FILED APR. 26, 1915. 1,350,588.

RENEWED NOV. 17,1919.

Patented Aug. 24, 1920.

3 SHEETS-SHEET 3.

I INVENTO/IQ,

IVLALC'OLM I-I. BAKER, OF BRAINTREE,

TRATRIX 'OF SAID MALCOLM T:

MASSACHUSETTS; MARIEIE. BAKER"ADMINIS BAKER, DECEASED, ASSIGNOR TO KENNETH W.

CROSBY, TRUSTEE, OF BOSTON, MASSACHUSETTS.

THERMODYNAMIC EXTINGUISI-IING DEVICE FOR LAMPS.

Application filed April 26, 1915, Serial No. 23,991.

To all whom it may concern:

Be it known that I, MALeoLM H. BAKER, a citizen of the United States, and a resident of Braintree, in the county of Norfolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Thermodynamic Extinguishing Devices for Lamps, of which the following is a specification.

My invention relates to all classes of lamps in which heat is generated by the production of light, and specifically to gas, electric, and kerosene, or oil, lamps.

The objection of my invention is to provide means whereby a brief interval shall elapse between the usual manual act of turning of? the light and the actual extinguishment of the said light.

The advantages of such an arrangement are obvious, particularly in cases, and these are almost universal in domestic use, where light is desired for a period, more or less brief, after the manual operation of extinguishment has taken place.

I am well aware that many devices exist for causing the automatic extinguishment of a lamp at certain predetermined time after it has been lighte'd,and for automatically lighting and extinguishing a lamp at certain hours,-but my device is not of this charactor, and meets a condition which none of these could practically fulfil.

My invention is adapted to be applied to any of the above types of lamps in a simple and selfcontained manner, and provides means whereby the lamp is lighted and operated, for any desired time, in the usual manner, and also provides means whereby a continuance of li ht is secured, as stated, for a definite perioclafter the turning off act has been performed. The conditions, in domestic use, for instance, where this is of specific advantage are in bed chambers,to allow time for retiring,in cellars orotherwise dark rooms to insure light While leaving the said rooms,'in hall-ways,to insure light while ascending or descending stairs therefrom,on piazzas, porches, and in many other locations.

In commercial use, also, the same require- Specification of Letters Patent.

Patented Aug. 24, 1920.

Renewed November 17, 1919. Serial No. 838,525.

ment exists, as for instance in stores and factories which are closed after dark, in which case the last person to extinguish the light often suffers considerable inconvenience in leaving the premises! In fact it may be broadly stated as applicable to all types of lamps, and particu larly to gas and electric lamps, as being in general non-portable, that the universal requirement is for a continuance of light for at least one minute after the act of turning off has been performed, it being extremely diliicult to think of a case in which such continuance would not be a very decided ad vantage, not only of convenience but also as a preventive of accidents.

In carrying out my invention I provide means, in this application comprising ther modynamic means, to control the extinguishing mechanism and extinguish the lamp a definite time after the turning off means have been actuated, which actuation usually consists of a mere reversal of the means operative to light the lamp. In the present invention I provide a thermodynamic device located in movable thermal relation to the source of heat of the lamp, and so arrange the said device as to cause a change of its said thermal relation to result in extinguishment of the light, the time element required being attained through the time taken by the said device to alter its thermal state after the said thermal relation has been changed.

That is, I provide a thermo-dynamic device in movable thermal relation to the source of heatof the lamp, and arrange that the said 'thermo-dynamic device shall be either thrown into or out of thermal operative relation to the source of heat by the action of turning off the said lamp, and also arrange extinguishing mechanism to be actuated by the movement produced in said thermo-dynamic device by the said change of thermal relation thereof with the source of heat.

Incidentally, my invention, when applied to gas lamps, possesses, in one of its forms, a decided additional advantage, in that it provides for the automatic cutting off of the gas supply in case the flame is extinguished without proper closing of the valve, as 18 the case if the flame is blown out.

I have illustrated my invention in the anneXed drawings, in its various forms, the said drawings being largely diagrammatic in, character in order to show the arrange ments and operations of the elements in a simple manner.

In the drawings Figures 1, 2, and 3 are front elevations and Fig. at a side elevation of my invention, three stages of operation being shown, and Fig. 5 a front elevation of a modified form Fig. 6 is a similar eleva tion-of another form. Figs. 7 and 8 are side and'front elevations, respectively, largely diagrammatic, of-application'of my invention to an oil lampburner, and Fig. 9 is a similar elevation of same applied to an electric light bulb. Figs. 10, '11, and 12,. are elevations of three further modifications, us-

7 ing gas burners, Fig..13 shows application to a mantle gas burner, and Figs. 1 1 and 15 show respectively front and side elevations of another form on an ordinary gas burner. Fig. 16 shows still another modification, and Fig. 17 a further type. Fig.18 again illustrates an electric bulb adapted, however, to cause decreasing in place of extinguishment of light. Figs. 19 and 20 are'elevations appplied to mantle gas burners and showing further modifications, and Fig. 21 shows a further type on an ordinary gas burner. F'i g. 22 illustrates direct control, of a gas valve by the thermal'means and Fig. 23 shows means to temporarily cool the thermocouple by means of a cooling mass of metal. Fig. 24 illustrates a burner in which the "light is decreased, but not extinguished, by

the tipv at 16, and the flame, (except in.

3) at 13. A thermo-dynamiccouple, composed of two or more metals of unequal expansibilities, appears at 2, and is attached to a block 9 formed of some material of high thermal-conductivity, such as copper. An

additional strip 17, also of copper, .rests loosel a ainst the more ex oansible stri 3 of c: l l

the couple2 to assist. in the heating thereof.

The block 9 carries an arm 10 pivoted at .20

and provided with an in-turned end 55 at its upper end and, at the other tensions or fingers 21, 22. The usual gas valve appears at 25 (in Fig. 4:) and is held by screw 18 and Washer 19. This valve 25 carries, fixed toits forward end,a disk 6 having a slot 5. An arm end, withaexy disk to turn the valve to the open position,

and at the same time swings the arm 10 away from the tip 16 by engagement of tl extension 8 with the finger 21. The valve is now locked open by engagement of the catch 4, carried by the couple 2,'wi.th the slot 5. This arrangement of parts is shown in Fig. 1. -The flame may now e ignited and the burner operated as long as desired, as a simple gas burner. When it is desired to 611- tinguish the burner, the chain 2% is pulled which swings back the arm 3, leaving the valvestill locked open however, causes e2;- tension 8 to engage finger 22, and thus mo the arm 10 to carry the portion thereol into thermal relation with-theflame 13.

This position is shown in Fig. 2.- The arm 10 now transmits heat from the flame 13 to the block 9, heats the said block, and therefrom heats and actuates the couple 2 which latter out-bends and frees the catch l from the slot 5, whereby'the spring 12 is permitted to close the valve and extinguish the light. It will be apparent that quite a time element is introduced during the heating of the block 9 and the transference of heat therefrom to actuate the couple 2, and that during the said time element the light is burning unimpaired. Fig. 3 shows extinguishment. I

In Fig. 5,'the arrangement of parts is such that whenthe chain 23 sprdled the arm 10 i'sthrown, by engagement of parts 8 and 29, into thermal relation with-the flame 13 as soon as same has been ignited by the operator. The valve disk- 6 is locked open by engagement of he catch 33 in slot 5, the catch 33 being pivoted'at 31 and actuated, to tend to properly'engage in the slot 5, by aspring p The therm'o-couple 2, now'ar 'anged with the more eX-pansible metal on theoutside, is at once heated, bendsinwardly, causes the catch 4 to pass over the end 32of thesmall pivotedfarm and to take the position shownin the figure, in which figure all" the parts are shown in the loca tions assumed after the gas has been lighter for a few moments, or for a sufficient time for the heat of the flame to be transmitted to actuate 'the'couple 2 as described.

Then the desired time of extinguishment arrives, the chain 2 1 is pulled, which operates to swing back the arm 3 and, through the engagement of parts 8 and 30, to move the arm 10 out of thermal relation to'the the same time flame 13, the valve meantime remaining locked open, as usual. The couple 2 now cools, bends outwardly, presses catch at against end 32, and thus throws catch out of slot 5, permitting the spring 12 to shut off the ga The movement of the couple 2, in fully cooling, also carries the catch 4- past and to the other side of the end 32, to the position first described. It will be noted here that considerable interval of time must elapse between the pull oi the chain 2% and the extinguishment of the flame, as the block 9, acting as a heat res ervoir, must cool before the couple 2 is ac tuated. This form of my invention also possesses the advantage that, if the gas be blown out or otherwise accidentally extin guished the valve is shortl closed.

In all of the above described figures the gas, when turned on, must be turned full on, but in Fig. 6 I show a form which per mits adjustment of the supply of gas manually to any desired degree, within the imits of thermal operation of the device. In this figure, the valve disk 36 is attached directly to the arm 8,-that is, the setting of the valve is directlv controlled by the said arm,-so that when the chain 23 is pulled the valve may be opened, or adjusted, together with chain 2 as desired. And, moreover, the gas may be cut off without any time interval by a pull of said chain 24. So far, therefore, the device is an ordinary gas burner of the chain pull type. lVhen it is desirec to extinguish with time interval, the third chain 85, attached to the disk 37, i. pulled! This rotates the said dish E7 1 I v I a 7 which is ireely movable with relation to the valve dish 36, until the catch dof the therrue-couple 2, engages in the slot This movement oi": the disk 87 also causes the eftcnsion thereo; 91:1 to engage the linger of the arm 10 and to thus throw the said armvinto thermal relation to the flame 18. The parts are shown in this relation in the figure. The block 9 now heats, actuates the couple 2, and releases the catch l to permit the spring 2 to rotate backward the disk 37. This disk'also carries a small catch 43, governed by small spring 46, which ongages in a slot i l of the valve disk 36, and eby closes the valve, no matter at what lc iee of opening valve may be set. At the 10 is' moved away iromth'e burner tip 16 by the engagement of the extension 41 and finger 42. This form affords a high degree or" flexibility,

since thefiame may be turned on and regu5 lat-n as desired, the only essential being that ame of sutlicient size must be maintained, a minimum, to actuate the thermo-couple when time extinguishment is desired.

t l l shown voted wick '77 i iover the 8, prel to the The against the SPTILDQ; s at: to tne body oi the burner at 78. l he arm has an extened. ihe

sion adapor extension 70 of the to also, retract the t is desired to extinguish with time interval, the chain 75 is pulled, which moves the arm i' to thermal 7 tion to the flame 13, heats 5a 1 arm and thereby the block 79, and couple 2, and trees the catch 81 from the end 80 to permit the spring 12 to move the member 71 to e:-;tin guish the flame. When it is desired to relight the lamp, a second. chain, shown at T6, is pulled, which swings back the arm 4:8 and with it the member 71, which is then lOCl'IOd back by engagement of parts 80, 81.

l n fig. 9, the usual electric light bulb appears at 65. An arm 56, pivoted at 5th, is provided with QXlJOZlSlGHS carrying pull chains 52, 53, and als carries an insulated spring 63 having a contact It also carries a thermo-couplc having, at its upper catch 58 adapted to engage a catch and a contact (31 adapted to engage the (hieration is as follows,To is pulled, which l relation to v, 11 (13-7, made contact with sa'd row actuated, 1 The catch 5?, opens t e contacts (31. 62, and ii-shcs the light,- since said latter contacts are in sericswith the lamp filament by means of wires G6, 6?, arm 56, couple iontacts 61, 62, spring (33, and wire 63, to terminals 54), 51. Parts are snown in ust after chain 52 is To ice-light, chain 53 is swings arm and tor-fires the cf iple 59 a; .inst the stop win (50, hereby the catches 51'', 58, are engag, and the contacts (31, G2, closed.

T V vsame means are used to as appear in Fig. the --.rmilly l ted to the flan'ie =mal operation. is pulled which "'sh the c movaile barrier dia 'rammatical licated, up into th 13 and deflects same out of opera. "e thermal couple 2, whi then cools pulled. I pulled, which asshown in the figure. To turn onthegas to re-light, the chain 23 is pulled,causing the arm 3 to open the valve and also to per mit the barrier 82 to fall out of a position of interference with the fiame 13. Action is then as in Fig. 5.

In Fig. 11 a small auxiliary vent S5 is shown in the stem15, and is closed by a swinging plate 87 pivoted to stem at 86.

The parts are shown in normal operating manner with the said vent closed by said plate. To extinguish, .the chain 2t'ispulled,

the arm 3 swung, and the vent 8 5 opened v the figure, the extension 92 of the arm 3 has 25' engaged the extension 93 of the ring 9 1 and has-thus swung the tip to a position adapted to locate the 'main flame 13 with itsv plane as shown, and out of operative thermal relation to the couple 2. To extinguish, the

chain 24: is actuated, which moves backthe arm 3, causes the extension 89 to engage the extension 93, and thus to rotate the tip 16, and flame'13, so that the latter assumes the position shownin the figure by broken lines, at which position the said flame heats and actuates the couple 2 to permit closing of the valve by the spring 12.

I Fig. 13 shows application to a gas mantle.

Here the mantle 95 is supported by a, frame 96 of high thermal conductivity, so that said 7 frame is heated during normal ope 'ation of the burner. A similarly conductive arm 97 is pivoted at 98 to a conductive block 9' carrying a'couple 2. The arrangement of valve controlling mechanism 1s similar to that shown in Fig. 10, and the parts are shown in the normal burning position. To extlnguish', the cham 24 is pulled, the arm 3 swung, the extension 101 caused to engage extension 100 of'arm-97, and said latter arm thus'thrown out of thermal contact with the block :96 interrupting the transmission of heat to the couple 2, which cools and causes extinguishment of tie lamp. To re-light, thechain23 is pulled, whereby the valve is opened and the arm 97 thrown into engagement thermally with the bracket 96.

.. In Figs. 1 1 15,, a thermo-expansible rod 102 is shown mountedin a swinging bracket 103 which is pivoted at 114. This rod 102 actuates, at 105, a short lever 104i pivoted at l08'and engaging at 106 witha second lever 116 pivoted at 109. The lower portion of said lever is joined by a stiff spring 111't0 a catch member t adapted to engage in the slot 5 of thevalve disk 6. To extinguish,

' engage the extension 112 of the bracket 103,

and the rod 102 thus moved over the flame 13 and into thermal relation therewith. This is accomplished without operatively disturbing the engagement of the catch 4: with the slot 5. The-parts are thus shown in the figure. The rod 102 now expands, and causes the valve to close. To open the valve, the chain 23 is pulled, which swings the arm 3, opens the valve, and causes the right hand portion ofsaid arm also to engage the lower extension 113 of the bracket 103 and thus to swing the rod 102 away from the tip of the burner.

Fig. 16 shows a thermo-couple 117 adapted to be itself swung up over the burner flame andinto' thermal relation therewith. hen the chain 2a is pulled, to extinguish, the arm '3 en a es the u) er extension 122 of the n c l couple 117, and moves the same into said thermal relation to the flame. The couple 117 is pivoted at 123 in a fixed manner, late ally, and at 118 in a manner adapted to permit lateral movement, by means of an axle 119'tl1erethrough. Therefore when 117 heats and bends out, the catch 120 is moved out er engagement with the slot 5 and the valve thus permitted to close. lVhen' the chain 23 is pulled, the valve is again opened, and the couple 117 swung away from the burner by engagement of the arm 3 with the lower extension 121 of said couple. I

Fig. 17 shows a thermo-expansible red 12 1- related to the flannel-3 by means of the parts 10, 9, and operatingto close the valve in the usualmanner.

.Fig. 18 shows application to an electric light bulb, in the same manner as shown in Fig. 9. In the present case, however, the light is decreased instead'of being extinguished. Here the contacts 61, 62, are opened in the usual manner, but immediately after such openingsecond contacts 131, 123, are closed, thus again completing the lamp circuit through'the filament and also through the resistance 130, so that a.lower current with lessened light results;

7 In Fig, 19 an expansible rod 132 is shown assurrounded by a tube of thermally conductive material, such as copper, and attached to the upper end of the said tube, shown at 133. The rod 132is pivoted at its lower end to an arm 13twhich has a fulcrum at 135. Said arm. also carries, by

means of a stiff spring 136, the usual catch at. A heat conductive arm137 is pivoted to the block 9 and. adapted to engage the bracket 96 ofthe gas mantle 95. W hen the chain 23 is pulled, the arm 3 opens the valve and the arm 137 is movedout of Contact with 96 by engagement of finger 138 with lower end of said arm. W hen chain 2 1 is pulled, the arm 137 is moved into contact with 96 by engagement of right hand portion of 3 with lower end of 137. Heat is now gradually transmitted to rod which expands, frees catchl from valve disk 6 and permits 5 spring 12 to close the valve. The parts are shown, in the figure, just after chain 24 has been pulled and before rod 139. has expanded. Y

I shows same type cxpansible rod T 1g. 19 but applied to a mantle burner in" such manner as t cause the rod to be heated while the lamp is in operation. This arrangement, as before set forth, causes the s to be shut off if the flame be blown out. 21 illustrates the arrangement of Fig. applied to an ordinary burner, the parts being shown after chain has been pulled and efore valve has been freed to close, the arm 3 being partially cut away for clean 20 ne s.

2:2, in which arm 3 is also shown partially cut away, represents direct control of e valve by the thermal device. Here e rod 139 is arranged to directly close the by means of the extension 141 thereof. in this arrangement the valve motion, required to close the valve, is slight since but small inci ments of motion are received as 139 e.\pantls. It is evident that when said rod cool it offers no interference to the opening of the valve. It is of course also apparent that leverage systems may be arranged to magnify the expansion of the rod 139 as desired, but .in present figure only gin'iple elements are shown;

In the expansible rod 1&3 is atached to the block M l carried by the burner '15, and extends upwardly into thermal ation with the flame 13, so that said rod ended while lamp is burning A. metal iii), of high ,thermal conductivity, bly copper, is carried in swinging adent b the arm to which forms an ex- =1 chain arm l ispulled, which so against the rod 1-313, c to contract, and

m and at the same LCll a to free the valve t spring 12 to close the valve. 24. the thermocouple 2 ,is arranged in thermal relation to the flame 13 the usual manner, but operates to desegnot extinguish, the gas, as follows. en chain 2st is pulled, the extension 149 arm 1&8 which in turn swings arm it) into thermal relation to 13. The couple 2 new bends to free catch & from valve dish 6, and the spring 12 then rotates said disk toward the closed position of the valve. The

valve is, however, prevented from fully closing by. the catch 150 which engages the slot 151'111' sald disk and arrests the valve at a carriedrby 143, frompoint adapted to give a decreased flame, under which condition operation now continues.

il hen it is desired to fully extinguish the flame, a third chain, shown at 152, is pulled. This frees catch 150 from slot 151 and permits spring 12 to fully close the valve.

In general, in certain of the figures where it might be particularly desirable to insulate, thermally, the heated portions of the burner from the structure thereof, I have indicated, in certain locations, insulation for that purpose. I

In the above figures I have in general shown the gas valve as of the usual rotary type, but it is of course evident that any form of valve controlled in any desired manner by the thermo-dy iamic means might be employed. And it is also evident that any form of valve control, as regards manual control, other than the chain pull shown, might be used.

In the various forms of the invention shown, considerablelatitude as regards time interval before extinguishment, is exhibited. In forms in which the thermo-dynamic device is acted upon directly by the flame the said interval is of course brief, merely a few seconds, while in forms in which the heat is transmitted, in the various manners shown, the said interval may run into minutes. It is evident that fairly large ranges, comparatively, are possible by the proper design and arrangement of the thermo-dy namic parts.

It will be evident from the foregoing that the essence of my invention comprises the extinguishment of a lamp a definite time after the extinguishing means have been actuated, and without in any manner interfering with the normal operation of the lamp or the duration of such operation, and with no reference to the time of operation of the lamp previous to the actuation of the said extinguishing means.

In the present application I have shown the extinguishing means as comprising thern'io-dynaniic elements actuated broadly by the heat of the lamp and specifically by an alteration of thermal relation to the said lamp as regards its source of heat. And that, broadly, this is caused by relatively moving the thermo-dynamic elements and And also, in the case ofof heat of the lamp, while the said lamp is in 0peration,that is, previous to the extinguishment thereof and while the lamp is operating under normal conditions as regards its, source of heat. V

7 Thus a sharp distinction is drawn between my invention and any device adapted to operate throughthe extinguishment of the light, or through a lessening of the amount of heat emitted by the lamp, such as would be caused in a gas burner flashing device by reduction'in size of flame or such as any of the many devices adapted to cut off the gassupply, by thermally governed means, whenthegas' is accidentally blown out or otherwise extinguished withoutclosure of the valve. 7

Otherwise expressed, the present lIIVGIl-r tion deals with an alterable thermal rela- .tion between a source otheat and a thermodynamic device both such elements, however, remaining themselves unchanged.

In the present application I have specifically employed thermo-dynamic means enerby me.

VVhile Ihave specifically shown and described, in the present application, only such thermosdynamic means as comprise the use of expansible n1etals',1t 1S evident that any I other form of thermodynamic device might be used, if desired.

In regard to electric lamps, it may be stated that those known as gas filled lamps are particularly adapted to my invention on account ofthe high temperature de veloped.

In general, it is clear that the time interval,between actuation of the extinguishing means and actual extinguishment of the light, may readily be varied .as'desiredfby varying the rate of transmissionoi heat from the sou'rce of heat of the lamp to the thermo-dynamic device,for instance, the devices shown in Figs. 1-, 5, and l3,'w1ll oi" courseg ve a longer time lnterval than those of Figs. 11, 12, 14:, 01 16. And that great latitude in this respect may be obtained by V modifications ofform of the said thermodynamic devices,-and by the use of various materials for the parts acting to transmit heat thereto.

rIt isalso clear that any thermo-dynamic Y deviceflocated upon a lamp 'structure'is to some degree in thermal relation to the source ofheat of the lamp, and I have defined. in

general, such thermal relation changes as I employ as being those of operative thermal relation changes,-as for instance when the thermal circuit between the thermal device and the source of heat is inter rupted, such interruption need only be to a degree suilicient to produce an operative thermal change in the thermal device.

The breadth of means employed to produce such operative changes I extend, as shown in Fig. 23, to the mechanical cooling. momentarily, of the thermal device by means of a cooling mass contacted therewith. V

- 'VVherever, therefore, in the subjoinec claims, I speak of altering the thermal relation,of a change oi such relation,,

of relatively movable thermal relation, of 1nterrupt1ngthe said relation,-or connect1on,of thermally relating the thermal device to the source of heat of'the lamp,-etc.,these statements are to be construed upon the foregoing.

It is of course clear that the word decrease or the word decreasing as they appear in the specification and claims cover any degree of decrease to and including total extlnguishment. As distinguished from the 'word extinguish which has the more limitedmeaning' of total impairment or decrease of the light.

JI claim as my invention 1. In a lamp adapted to generate heat as an attribute of light, in combination; means to decrease the useful light emitted by the lamp; thermo-dynamic means arranged to. govern the said decreasing means; and means for operatively altering the heatreceiving disposition of the said thermo dynamic means relative to the source of substantially constant heat of the lamp, without directly varying the latter.

2. In a lamp adapted to generate heat as an attribute of light, incombination; means tending to extinguish the lamp, means to restrain the said extinguishing means; and thermo-dynamic meansto releasethe said 7 restrainin moans; togetherwith means for transmitting heat from the source of sub-- stantial constant heat of the lamp to the said thermo-dynamic means, and means for altering the operative disposition, of said heat transmitting means relative to said sour'ceofheat, whereby the said th'ermo-dynamicmeans' are actuated to release the said restraining means.

'3;In a gas burner, in combination; means to decrease the supply of gas to the burner, and thermodynamic meansto govern the said decreasing means ;the said thermodynamic means having a heat-receiving disposition operatively variable relative to the substantially constant flame of the burner. V

4, In a gas burner including a valve, means to control the valve to decrease'the supply of gas, thermo-dynamic means to govern the said contr lling means, and means for moving the said thermo-dynamic means into operative thermal relation to the flame of the burner.

5. In a lamp adapted to generate light and heat, means tending normally to decrease the useful light emitted by the lamp, means to restrain the said decreasing means, thermo-dynamic means to control the said restraining means, and means for moving the said thermo-dynamic means into and out of operative thermal relation to the source of heat of the lamp.

6. In a lamp adapted to generate heat as an attribute of light, means to extinguish the lamp, thermo-dynamic means to control the operation of the said extinguishing means, and means to actuate the said thermodynamic means, the said actuating means comprising a movable thermo-conducive body adapted to transmit heat from the source of heat of the lamp to the said thermodynamic means.

7. In a lamp adapted to generate heat as an attribute of light, means to extinguish the light, means to actuate the said extinguishing means, a thermo-dynamic deviceto control the said actuating means, and a thermal connection between the said thermo-dynamic device and the source of heat of the lamp, the said thermal connection being arranged relatively movable to the said source oi heat, whereby such movement alters the temperature of the said thermo-dynamic device to actuate the same and cause extinguishment of the lamp.

8. In a lamp adapted to generate heat as an attribute of light, means tending normally to extinguish the light; means adapted normally to restrain the said extinguishing means; thermo-dynamic means adapted, when actuated, to free the said restraining means; and means to vary the heat-receiving disposition of said thermo-dynamic means relative to the source of substantially constant heat of the lamp; thereby to produce a change of temperature in the said thermodynamic means adapted to actuate the same and to cause extinguishment of the light.

9. In a lamp adapted to generate light and heat, means normally tending to extinguish the light, means normally acting to restrain the said extinguishin means, thermo-dynamic means adapted when actuated to free the said restraining means, and means to place the said thermodynamic means in operative thermal relation to the source of heat of the lamp, whereby the said thermodynamic means are actuated and the lamp extinguished a predetermined time after the said thermal relation has been established.

10. In a gas burner including a valve therefor, means to open the valve, means to retain the said valve open, means tending to close the said valve, a thermo-dynamic de vice, normally out of operative thermal relation to the flame of the burner, adapted to free the said retaining means when actuated, and means r thermally relating the said thermo-dynamic device to the said flame, the said latter means being operated to make said thermal connection by a reversal of the said valve opening means.

11. In a gas burner including a valve therefor, means tending normally to close the said valve, means tending normally to restrain the said closing means, and a thermo-dynamic device, normally out of operative thermal relation to the flame of the burner, adapted when actuated to free the said restraining means; together with means to operatively relate the said thermo-dynamic device to the lame of the burner whereby the said thermo-dynamic device is actuated to free the said restraining means and permit the valve to close.

12. In a gas burner including a valve therefor, means to control the valve to open or close the same to any desired degree, spring means adapted, when energized, to close the said valve, means to retain the said spring means inoperative with respect to the valve when energized, a thermo-dynamic device to control the said retaining means, means to thermally relate the'said thermodynamic device to the flame of the burner, means to alter the said thermal relation, and means adapted to actuate the said altering means and to energize the said spring means simultaneously, whereby the said thermodynamic device is operated to release the said retaining means and permit closure of the valve a predetermined time after the operation of the said latter altering and energizing means.

13. In a gas burner including a valve there for, means to open the valve, spring means tending to close the valve, means to retain the valve open, and thermo-dynamic means adapted, when actuated, to free the said retaining means, the said hermo-dynamic means being normally out of thermal relation to the flame oi the burner; together with means to thermally relate the said thermo-dynamic means to the said flame, the said latter means being operated by a re versal of the said valve opening means.

1a. In a gas burner including a valve therefor, mechanism adapted to open the valve, when actuated in one direction, but inopera tive with respect to the valve when actuated in the reverse direction, spring means normally tending to close the valve, a thermodynamic device normally adapted to retain the valve open and normally itself out of operative thermal relation to the flame of the burner, and means, operated by the valve mechanism when same is actuated in said reverse direction, to thermally relate the said burner; whereby the valve is permitted to thermo-dynamic device to the flame of the close. v V In a gas burner including a valve therefor, means tending normally to close the valve, means normally active torestrain said closing means, a thermo-dynamic device adapted to tree said restraining means, means to transmit hezt from the flame of the burner to the saidthermo-dynamic device, and means to varyindegree the said transmission of heat during normal operation or the burner ;\vhereby sa d thermodynamic device is actuated to permit closing ofthesaid valve.

7 16; In a lamp adapted to generate heat as an attribute of light, means-to extinguish 'the lamp and thermo-dynamic means ar- 17L ln a lamp adapted to generate heat as] an attribute of light, means automatically to decrease the useful light emitted by the lam 3 comprisin means ada )ted to decrease 7 i b r the light thermo-dynamic means operative to actuate the said decreasing means, and means to operatively alter the thermal relation of the said thermodynamic meansto the source of heat of the lamp during the delivery of a substantially constantamount of energy to the said source of heat; together 'With manual controlling means adapted when moved to one position to turn on the lamp for continuous'and normal operation and when moved to another position to operatively alter the said thermal relation; and further adapted, W ien moved to the said first mentioned position, to restore the original thermal relation.

18. A gas valve control apparatus em-.

bodying, in combination; a movable gas port-control member; a relatively movable actuator element: therefor adapted by one movement to establish said member continuously in port opening position; mechanism adapted automatically to move said member to port closing position; and nore mally inactive; slow-acting instrumentalities adapted torender said mechanism operative a substantial interval of time after said instrumentalities are operatively energized; together with means whereby another inovement'ot said actuator element ope z tively energizes said instrumentalities.

'19. A gas valveand burner control appa ratus embodying, in combination; a-movable gas port control member; arelatively mov-' able actuator element therefor adapted by one movement to establish said member continuously in port opening position; mechatial interval of time said thermostat is thermally energized 'togetlier Withmeans whereby another movement of saidactuator element causes thermal energization of the thermostat. p V

20. A self-contained gas burner and controlling'valve arrangement comprising, in combinationivith the burner and valve, normally-inactive automatic means operatively related to the valve and adapted when releasedfto actuate .the same';and singl acting means cper'atively related both to said valve and to said automatic means and adapted, upon suitable control movement, to establish the arrangement independently oi said burner for indefinite, continuous operation of the latter and, upon another control movemennto render said automatic means operative to actuate said valve. 7

21. A self-contained gas burner and controlling valve arrangement comprising, in

combination with theburner and valve,.nor mally-inactive, automatic means operatively related to the valve and adapted :WllQll en-V ergized and released toactuate the same and single-acting means operatively related both to said valve and to said automatic means'and adapted uponsuitable control ii'iovement to establish the arrangement independently or said burner vtor indefinite, continuous operation of the latter, and to energize and lock said automatic means, and upon another control movement, to render said automatic means operative to actuate saidvalve. V

'22. A self-contained burner and con rolling valverarrangement comprising, in

combination with the burner and valve,

normally-inactive automatic means operatively related to the valve and adapted when 7 trolling valve arrangement comprising, in combinat on Fltli the burner, and valve; controlling means adapted to adjust the valve'to permit continuous operation of said burner; normally inactive automatic means operatively' related to the vali 'e and including a controllingthermostat normally ar- 23. A self-contained gas burner and conranged to be operatively remote from the heat of the burner fiame,the said means being adapted to actuate said valve upon energization of the thermostat; together with manually operable controlling means for subjecting said thermostat to the heat of the burner thereby thermally to energize same.

24. A gas valve control apparatus embodying, in combination; a movable gas port control member; a relatively movable actuator therefor adapted to establish said member in a port opening position; mech' anism adaptec automatically to move said member to a port-closing position; slowacting instrumentalities adapted to render said mechanism operative a substantial interval of time after said instrumentalities are operatively energized; together with normally inactive means adapted to be rendered operative to energize said instrumentalities.

25. A self-contained gas burner and controlling valve arrangement comprising, in combination with the burner and valve, normally-inactive, automatic means operatively related to the valve and adapted when released to actuate the same, said automatic means, including a controlling thermostatand single-acting controlling means operatively related both to said valve and to said automatic means and adapted, upon. suitable control movement, to establish the arrangement for indefinite, continuous operation of the burner, and, upon further movement, to render said automatic means operative to actuate said valve.

26. A self-contained gas burner and controlling valve arrangement comprising, in combination with the burner and valve, normally-inactive automatic means operatively related to the valve and adapted when released to actuate the same, said automtic means including a controlling thermostat and single-acting, manually-operable, controlling means operatively related both to said valve and to said automatic means and adapted, upon suitable control movement to establish an arrangement for indefinite, continuous operation of the burner, and upon further movement to render said automatic means operative to actuate said valve.

27. A self-contained gas burner and controlling valve arrangement comprising, in

combination with the burner and valve;

normally-inactive automatic means operatively related to the valve and adapted when released to actuate the same, said automatic means including a controlling thermostat ;and single-acting, manually-operable, controlling means operatively related both to said valve and to said automatic means and adapted, upon suitable control movement, to establish the arrangement for indefinite, continuous operation of the burner, and, upon further movement, to render said automatic means operative to actuate said valve and to close the same.

28. A self-contained gas burner and controlling valve arrangement comprising, in combination with the burner and valve, nor mally-inactive, automatic means operatively related to the valve and adapted when released to actuate the same, said automatic means including a controlling thermostat;and single-acting manually-operable, controlling means operatively related both to said valve and to said automatic means and adapted, upon suitable control move ment, to establish the arrangement for indefinite, continuous operation of the burner, and to energize and lock said automatic means; and upon further movement to render said automatic means operative to actuate said valve and to close the same.

MALCOLM H. BAKER.

Witnesses:

RAYMOND D. SMITH, SILvro AMoRoso. 

